Open supersu. Is xposed listed under apps? If no, then just reinstall the xposed app. To install your module, go to http://repo.xposed.info/module-overview, search for dot view hack, download and install it. In xposed you supposed to activate your module and do a reboot. Finish!
"app_process version 58 has been installed previously but version "---" was found now. If you didn't expect an old file to be restored, you might want to try installing via recovery auto or manual"
Should it say this?